I am currently on Windows 8.1 and would like to do a clean install of Windows 7. I have already split OS (C into two separate disk partitions and have used WinToUSB to put a Windows 7 Home Premium 64 Bit ISO onto a USB stick. I am currently stuck on loading from the USB stick. I have already tried going through Settings>Change PC Settings>Update and recovery>Recovery>Advanced Startup and selecting to load from a USB stick, but that does not do anything, but load regularly. What do I do from here?